Home / 3,630.60-5,446.70-1,290.75

Finding the Fourth Proportional to 3,630.60, 5,446.70 and 1,290.75

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Solution

The fourth proportional to 3,630.60, 5,446.70 and 1,290.75 is: 1,936.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.60 : 5,446.70 = 1,290.75 : x
  2. Step 2: Convert to fraction form
    3,630.60/5,446.70 = 1,290.75/x
  3. Step 3: Cross multiply
    3,630.60x = 5,446.70 × 1,290.75
  4. Step 4: Simplify right side
    3,630.60x = 7,030,328.03
  5. Step 5: Solve for x
    x = 7,030,328.03/3,630.60
  6. Step 6: Final answer
    x = 1,936.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.